Effect of conformation traits on longevity of cows of Slovak simmental breed

Abstract

The effect of body conformation traits on the length of productive life has been analyzed in a group of 6585 culled cows of Slovak Simmental breed. The average length of productive life was 1451 days (3.88 years). Among the main conformation traits the most important effect were recorded for body frame (F = 17.39 +++), udder (F = 9.43 +++) and feet and legs (F =6.41 +++). The level of effects of particular body conformation traits has also been evaluated in detail. The most significant were the effects of rump slope (F = 16.05 +++), croup height (F = 10.91 +++) and body depth (F = 8.32 +++). The analysis of udder traits showed that the most important were the effects of udder depth (F = 29.62 +++), teat length (F = 1.25 +++), rear udder attachment (F = 6.46 +++) and rear udder (F = 4.05 +++). Among the traits of feet and legs notable effects were recorded for fetlock (F = 16.61 +++), feet (F = 10.32 +++) and rear legs (F = 6.83 +++). Results of this study showed a significant effect of conformation traits – principal as well as secondary traits such as body frame, limb and udder on longevity of cows.